Can you prevent scoliosis?

No. The cause of adolescent scoliosis is unknownt the other types have no adjustable risk factors.
Depends. This depends on type of scoliosis. In most cases no. If there is significant leg length discrepancy, this can lead to scoliosis which can be prevented by correcting discrepancy. In older individuals, especially women, a new or denovo scoliosis may develop due to degenerative changes +/- bone density loss. Prevent this with good exercise habits, weight control, no smoking & good bone health.